The Petka variety is known in the scientific community as a standard genetic specimen used for creating homozygous lines, studying the rye karyotype, and gene mapping. It is not a modern commercial hybrid intended for industrial cultivation.
This genotype should not be confused with the historical Petkus rye. Available publications lack information on commercial characteristics of the variety, such as maturity group, plant height, or disease resistance in field conditions, as the primary purpose of the variety is limited to the field of genetics.
Sources5
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Countries of admission
2 jurisdictions
Green indicates countries where the variety is listed in the national catalogue and its seeds are authorized for sale. Expired registrations are marked separately: the variety was previously admitted, but sale is no longer permitted.
The directory replicates the primary source. If an entry differs from the official publication, please specify the discrepancy and provide a link if possible. Corrections are added to the moderation queue.
This is a directory, not an official registry: data is based on public disclosures and may have changed.
More about sources
KOECHLING| Dr. J. Koechling in Fa. Saatzucht Petkus GmbH / ERFURTH LUTZ| Lutz Erfurth in Fa. Saatzucht Petkus GmbH / SCHULZ R.| R. Schulz in Fa. Saatzucht Petkus GmbH